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Improved Screw and Stud Machinery

Science Familiarly Illustrated

Treatment of Animal Refuse in Europe

Editorial Summary

Application of the Lever Escapement

By Jules D. Huguenin Vuillemin

Recent American and Foreign Patents

Answers to Correspondents

New Publications

Extension Notices

Hutton and Mee's Improved Blind Rod

Swift's Sash-Weight Attachment

A Word About Almanacs

The Value of Mechanical Skill in the Arts

The Teredo, or Ship Worm--Important Trial


Gravel and Cement Mining

Patent Claims

Increased Force in the Patent Office

Scientific American


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April 06, 1867

20% Sitewide for President's Day